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Thermal efficiency is important and thats why no corners are cut. Each window closes tightly and securely for maximum efficiency. Each window’s heavy duty hardware system secures your windows when they are closed and offers many years of hassle-free operation.
|Glass||Overall IG Thickness||C-O-G U-Factor||Total Product U-Factor||Total Product SHGC|
|RLE 71-38/Clear, Argon||1.004||0.26||0.28||0.25|
|RLE 71-38/Clear, Argon (Grids)||1.004||0.26||0.28||0.24|